The entire content of your message save two sentences is directly lifted from our article about Technical Writing on Rediff.
The entire article is at: http://www.rediff.com/getahead/2005/jul/13tech.htm
You could have provided a link to the article as otherwise it seems that the content is yours. You do know that one of the key principles of technical writing, or indeed any writing, is providing appropriate references and protecting copyrights.